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Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.
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Festo
173918
On/off valve HEL-3/8-D-MINI-NPT
The Festo 173918 is a directly controlled 2/2-way closed monostable industrial component featuring a piston gate valve structural design with a 40 mm width dimension and soft sealing principle. It operates via pneumatic actuation with a mechanical spring reset method, an adjustable exhaust air function, and non-reversible flow direction across an operating pressure range of 0.3 MPa to 1.6 MPa (3 bar to 16 bar). This unit achieves a normal nominal flow rate of 1600 l/min, a C value of 7.6 l/sbar, a b-value of 0.3, and utilizes compressed air conforming to ISO 8573-1:2010 [7:4:4] or inert gases with oil lubrication possible. Featuring any mounting position, no manual override, moderate corrosion stress resistance class (CRC 2), and VDMA24364-B1/B2-L LABS conformity, it maintains identical output air quality. Submit the exact part number, quantity, and application requirements for a quote.
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Request a QuoteWhy no listed price?
Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Festo references — within one business day.
- Manufacturer
- Festo
- Part number
- 173918
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 173918.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Width dimension
- 40 mm
- Exhaust air function
- Adjustable
- Actuation type
- Pneumatic
- Sealing principle
- Soft
- Mounting position
- Any
- Manual override
- None
- Structural design
- Piston gate valve
- Reset method
- Mechanical spring
- Type of control
- directly
- Flow direction
- Non-reversible
- Valve function
- 2/2-way, closed, monostable
- Operating pressure
- 0.3 MPa...1.6 MPa | 3 bar...16 bar
- b-value
- 0.3
- C value
- 7.6 l/sbar
- Normal nominal ow rate (normalized to DIN 1343)
- 1600 l/min
- Operating medium
- Compressed air as per ISO 8573-1:2010 [7:4:4] | Inert gases
- Information on operating and pilot media
- Operation with oil lubrication possible (required for further use)
- Corrosion resistance class (CRC)
- 2 - Moderate corrosion stress
- LABS (PWIS) conformity
- VDMA24364-B1/B2-L
- Air quality class at the output
- Compressed air as per ISO 8573-1:2010 [7:4:4] | Inert gases
- Temperature of medium
- -10 °C...60 °C
- Ambient temperature
- -10 °C...60 °C
- Product weight
- 126 g
- Type of mounting
- In-line installation | With accessories
- Pneumatic connection 1
- 3/8 NPT
- Pneumatic connection 2
- 3/8 NPT
- Note on materials
- RoHS compliant
Engineering context
Identification and RFQ Guidance
What to include in your RFQ
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Technical verification
Our sourcing response is prepared against Festo 173918. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.